energy efficiency
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energy efficiency
The ratio of achieved benefit (e.g., light, heat) to energy used. High energy efficiency means that little energy is lost for a particular purpose.
Durch die neue Heizung hat sich die Energieeffizienz des Hauses deutlich verbessert.
The new heating system has significantly improved the energy efficiency of the house.
This word is made up of 'Energie' (energy) and 'Effizienz' (efficiency). Its meaning is therefore directly understandable if you know the two parts: it is about how efficiently energy is used.
Moderne Geräte haben eine viel höhere Energieeffizienz als alte Modelle.
Modern appliances have much higher energy efficiency than old models.
'Energieeffizienz' (energy efficiency) is often combined with verbs like 'steigern' (to increase), 'verbessern' (to improve), or 'erhöhen' (to raise). Typical adjectives are 'hoch' (high), 'gut' (good), 'niedrig' (low), or 'schlecht' (poor).
Mit der neuen Dämmung wollen wir die Energieeffizienz unseres Hauses steigern.
With the new insulation, we want to increase the energy efficiency of our house.
'Energieeffizienz' (energy efficiency) is a technical term from the fields of technology, construction, the environment, and politics. You often hear and read it in the news, technical reports, or discussions about climate change.
Die Regierung fördert Maßnahmen zur Verbesserung der Energieeffizienz in privaten Haushalten.
The government is promoting measures to improve energy efficiency in private households.
efficiency
'die Effizienz' and 'die Energieeffizienz' both describe how good a result is in relation to the effort used. 'Effizienz' is the general word: it can be about time, money, work, or energy. 'Energieeffizienz' is more specific and refers only to the use of energy, for example in houses, appliances, or heating systems. The words can be confused because energy is also a kind of input. If the input is meant generally, 'Effizienz' fits. If it is specifically about electricity, heat, or energy consumption, 'Energieeffizienz' is more precise.
Beim Kauf einer Waschmaschine achtet Maria auf die Energieeffizienz.
When buying a washing machine, Maria pays attention to energy efficiency.
Durch die neue Planung hat das Team seine Effizienz deutlich verbessert.
The team significantly improved its efficiency through the new planning.